Parent comment is right. The body of documentation generated for Ubuntu by the community is an enormous asset. It's one of the important side effects of it being the most used distro.

Parent comment is wrong. The default UX used in Ubuntu may actually be confusing for newbies, as it’s quite different compared to Windows. Just check some screenshots or videos and you can see for yourself. I’d instead recommend going for a distro which uses a more familiar UX (ie the Desktop Environment).

Perhaps a distro which uses KDE, XFCE, Cinnamon, MATE or LXQt by default (these are "desktop environments" (DE) - which is a collection of the desktop shell components (eg start menu, taskbar, dock etc) plus default applications that go with it eg the file manager, document viewer etc). A desktop environment like the ones I mentioned above, in their default settings, should be familiar to most Windows users. Now whilst you can install any DE on any distro, it can be a daunting task for newbies, plus, the settings might not be optimal for you. So it's better to go with a distro that comes with such easy-to-use DEs by default. Examples of such distros include Linux Mint and Zorin. These, by default, should look quite familiar to you, and should be even more easier to use than Ubuntu.

Both Mint and Zorin are based on Ubuntu, so most of the documentation for Ubuntu should be relevant to Mint and Zorin as well. But if you’re not sure, just include quotes for your distro when you’re doing a web search, eg how do I do this in Linux "Mint" will ensure you’ll only get results with “Mint” in the page.